#include "misc.h"
#include "platform.h"

static const unsigned char triangle_tab[] = {
    //
    0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12, 0x14, 0x16,
    0x18, 0x1a, 0x1c, 0x1e, 0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e,
    0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e, 0x40, 0x42, 0x44, 0x46,
    0x48, 0x4a, 0x4c, 0x4e, 0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e,
    0x60, 0x62, 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76,
    0x78, 0x7a, 0x7c, 0x7e, 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e,
    0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e, 0xa0, 0xa2, 0xa4, 0xa6,
    0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe,
    0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6,
    0xd8, 0xda, 0xdc, 0xde, 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee,
    0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe, 0xff, 0xfd, 0xfb, 0xf9,
    0xf7, 0xf5, 0xf3, 0xf1, 0xef, 0xed, 0xeb, 0xe9, 0xe7, 0xe5, 0xe3, 0xe1,
    0xdf, 0xdd, 0xdb, 0xd9, 0xd7, 0xd5, 0xd3, 0xd1, 0xcf, 0xcd, 0xcb, 0xc9,
    0xc7, 0xc5, 0xc3, 0xc1, 0xbf, 0xbd, 0xbb, 0xb9, 0xb7, 0xb5, 0xb3, 0xb1,
    0xaf, 0xad, 0xab, 0xa9, 0xa7, 0xa5, 0xa3, 0xa1, 0x9f, 0x9d, 0x9b, 0x99,
    0x97, 0x95, 0x93, 0x91, 0x8f, 0x8d, 0x8b, 0x89, 0x87, 0x85, 0x83, 0x81,
    0x7f, 0x7d, 0x7b, 0x79, 0x77, 0x75, 0x73, 0x71, 0x6f, 0x6d, 0x6b, 0x69,
    0x67, 0x65, 0x63, 0x61, 0x5f, 0x5d, 0x5b, 0x59, 0x57, 0x55, 0x53, 0x51,
    0x4f, 0x4d, 0x4b, 0x49, 0x47, 0x45, 0x43, 0x41, 0x3f, 0x3d, 0x3b, 0x39,
    0x37, 0x35, 0x33, 0x31, 0x2f, 0x2d, 0x2b, 0x29, 0x27, 0x25, 0x23, 0x21,
    0x1f, 0x1d, 0x1b, 0x19, 0x17, 0x15, 0x13, 0x11, 0x0f, 0x0d, 0x0b, 0x09,
    0x07, 0x05, 0x03, 0x01
//
    };
static const unsigned char sawtooth_tab[] = {
    //
    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
    0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
    0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
    0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
    0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
    0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53,
    0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b,
    0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
    0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83,
    0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b,
    0x9c, 0x9d, 0x9e, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
    0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, 0xb0, 0xb1, 0xb2, 0xb3,
    0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
    0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb,
    0xcc, 0xcd, 0xce, 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
    0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, 0xe0, 0xe1, 0xe2, 0xe3,
    0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
    0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb,
    0xfc, 0xfd, 0xfe, 0xff
//
    };

static const unsigned char rect_tab[] = {
    //
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0x00, 0x00};

static const unsigned char sine_tab[] = {
    //
    0x80, 0x82, 0x84, 0x87, 0x89, 0x8c, 0x8e, 0x91, 0x93, 0x95, 0x98, 0x9a,
    0x9d, 0x9f, 0xa1, 0xa3, 0xa6, 0xa8, 0xaa, 0xac, 0xaf, 0xb1, 0xb3, 0xb5,
    0xb7, 0xb9, 0xbb, 0xbd, 0xbf, 0xc1, 0xc3, 0xc4, 0xc6, 0xc8, 0xca, 0xcb,
    0xcd, 0xce, 0xd0, 0xd1, 0xd3, 0xd4, 0xd5, 0xd7, 0xd8, 0xd9, 0xda, 0xdb,
    0xdc, 0xdd, 0xde, 0xde, 0xdf, 0xe0, 0xe1, 0xe1, 0xe2, 0xe2, 0xe2, 0xe3,
    0xe3, 0xe3, 0xe3, 0xe3, 0xe4, 0xe3, 0xe3, 0xe3, 0xe3, 0xe3, 0xe2, 0xe2,
    0xe2, 0xe1, 0xe1, 0xe0, 0xdf, 0xde, 0xde, 0xdd, 0xdc, 0xdb, 0xda, 0xd9,
    0xd8, 0xd7, 0xd5, 0xd4, 0xd3, 0xd1, 0xd0, 0xce, 0xcd, 0xcb, 0xca, 0xc8,
    0xc6, 0xc4, 0xc3, 0xc1, 0xbf, 0xbd, 0xbb, 0xb9, 0xb7, 0xb5, 0xb3, 0xb1,
    0xaf, 0xac, 0xaa, 0xa8, 0xa6, 0xa3, 0xa1, 0x9f, 0x9d, 0x9a, 0x98, 0x95,
    0x93, 0x91, 0x8e, 0x8c, 0x89, 0x87, 0x84, 0x82, 0x80, 0x7d, 0x7b, 0x78,
    0x76, 0x73, 0x71, 0x6e, 0x6c, 0x6a, 0x67, 0x65, 0x62, 0x60, 0x5e, 0x5c,
    0x59, 0x57, 0x55, 0x53, 0x50, 0x4e, 0x4c, 0x4a, 0x48, 0x46, 0x44, 0x42,
    0x40, 0x3e, 0x3c, 0x3b, 0x39, 0x37, 0x35, 0x34, 0x32, 0x31, 0x2f, 0x2e,
    0x2c, 0x2b, 0x2a, 0x28, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0x21, 0x21,
    0x20, 0x1f, 0x1e, 0x1e, 0x1d, 0x1d, 0x1d, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c,
    0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1c, 0x1d, 0x1d, 0x1d, 0x1e, 0x1e, 0x1f,
    0x20, 0x21, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x2a, 0x2b,
    0x2c, 0x2e, 0x2f, 0x31, 0x32, 0x34, 0x35, 0x37, 0x39, 0x3b, 0x3c, 0x3e,
    0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e, 0x50, 0x53, 0x55, 0x57,
    0x59, 0x5c, 0x5e, 0x60, 0x62, 0x65, 0x67, 0x6a, 0x6c, 0x6e, 0x71, 0x73,
    0x76, 0x78, 0x7b, 0x7d};

static unsigned char tmp_tab[256] = {0};
static unsigned char dma_tab[256] = {0};

static int step = 1000000UL;
static unsigned long counter = 0;

void DDS_SetFreq(int freq)
{
    step = (int)(freq * (4294967296.0 / (rcu_clock_freq_get(CK_SYS) / 10)));
//    step = freq;
}

void DDS_DMA_FTF(void)
{
    for(register int i = 0; i < 128; i += 8) {
        counter += step;
        dma_tab[i + 128] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 1] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 2] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 3] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 4] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 5] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 6] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 128 + 7] = tmp_tab[counter >> 24];
    }
//    static int count = 0;     count++; count %= 1000000UL; if(count == 0) print_log();
}
void DDS_DMA_HTF(void)
{
    for(register int i = 0; i < 128; i += 8) {
        counter += step;
        dma_tab[i] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 1] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 2] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 3] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 4] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 5] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 6] = tmp_tab[counter >> 24];
        counter += step;
        dma_tab[i + 7] = tmp_tab[counter >> 24];
    }
}

static void DDS_GenTab(void)
{
    DataConfig_t* pdc = DC_Get();
    const unsigned char* psrcs[] = {
    //
        [DC_WAVEFORM_SINE] = sine_tab,    //
        [DC_WAVEFORM_RECTANGLE] = rect_tab,    //
        [DC_WAVEFORM_TRIANGLE] = triangle_tab,    //
        [DC_WAVEFORM_SAWTOOTH ] = sawtooth_tab    //
        };
    volatile const unsigned char* psrc = psrcs[pdc->state.waveform];

    const float atts[] = {
    //
        [DC_AMPL_12DBM] = 1,    //
        [DC_AMPL_9DBM] = 0.7071,    //
        [DC_AMPL_6DBM] = 0.5,    //
        [DC_AMPL_3DBM] = 0.3536,    //
        [DC_AMPL_0DBM] = 0.25    //
        };
    float att = atts[pdc->state.ampl];

    for(int i = 0; i < 256; i++) {
        tmp_tab[i] = (psrc[i] - 128) * att + 128;
printf("%d %d\n", tmp_tab[i], psrc[i]);
    }
}

void DDS_ViewTab(void)
{
    for(int i = 0; i < 256; i++) {
        printf("%4d", tmp_tab[i]);
        if(i % 16 == 15)
            printf("\n");
    }
}
void DDS_Start(void)
{
    DataConfig_t* pdc = DC_Get();
    int freq = pdc->cfg.freq[pdc->state.curr_preset];
    DDS_GenTab();
    DDS_SetFreq(freq);
    dma_memory_address_config(DMA_CH2, (unsigned long)&dma_tab);
    dma_transfer_number_config(DMA_CH2, 256);

    nvic_irq_enable(DMA_Channel1_2_IRQn, 0, 0);
    dma_circulation_enable(DMA_CH2);

    dma_channel_enable(DMA_CH2);
    dac_deinit();
    dac_trigger_enable();
    dac_trigger_source_config(DAC_TRIGGER_T5_TRGO);
    dac_enable();
    dac_dma_enable();

    timer_enable(TIMER5);
}

void DDS_Stop(void)
{
    dma_channel_disable(DMA_CH2);
    dac_dma_disable();
    nvic_irq_disable(DMA_Channel1_2_IRQn);
    timer_disable(TIMER5);
}
/*
 void TIMER5_DAC_IRQHandler(void)
 {
 //    timer_interrupt_flag_clear(TIMER5, TIMER_INT_UP);
 TIMER_INTF (TIMER5) = ~TIMER_INT_UP;
 counter += step;
 GPIO_OCTL (GPIOA) = sine_tab[counter >> 24];
 }
 */
